MANTECH INTERNATIONAL CORP - FORM 10-K - EX-21.1 - EXHIBIT 21.1

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EXCEL - IDEA: XBRL DOCUMENT - MANTECH INTERNATIONAL CORP	Financial_Report.xls
EX-32 - EXHIBIT 32 - MANTECH INTERNATIONAL CORP	mant12-31x2014ex32.htm
EX-18 - EXHIBIT 18 - MANTECH INTERNATIONAL CORP	mant12-31x2014ex18.htm
EX-31.1 - EXHIBIT 31.1 - MANTECH INTERNATIONAL CORP	mant12-31x2014ex311.htm
EX-23.1 - EXHIBIT 23.1 - MANTECH INTERNATIONAL CORP	mant12-31x2014ex231.htm
EX-31.2 - EXHIBIT 31.2 - MANTECH INTERNATIONAL CORP	mant12-31x2014ex312.htm
10-K - 10-K - MANTECH INTERNATIONAL CORP	mant12-31x201410k.htm

EXHIBIT 21.1

Subsidiaries of the Registrant

The significant subsidiaries of the Registrant, as defined in Section 1-02(w) of regulation S-X, are:

ManTech Advanced Systems International, Inc.

ManTech SRS Technologies, Inc.

MANTECH INTERNATIONAL CORP - FORM 10-K - EX-21.1 - EXHIBIT 21.1 - February 20, 2015